HINDI -29/06/20
अब कहाँ दूसरों के दुख से दुखी होने वाले
Unit :1
1.Textbook ¹स्पर्श भाग-2 पृष्ठ क्रम 100-114अब कहाँ दूसरों के दुख से दुखी होने वाले पाठ का वाचन कीजिए और पृष्ठ क्रम 116 पर दिए गए शब्दों के अर्थ पढि़ए।
SCIENCE VACATIONS H.W.
CHEMICAL REACTIONS AND EQUATIONS SECTION A 1 Based on the video solve the questions that follows: a (i) A chemical equation represent the _______ that actually takes place. (ii) 1molecule of H2SO4 contains 2 Hydrogen , 1 Sulphur and 4 Oxygen atoms What does 1 molecule of Ca(OH)2 contain ? (iii) Complete the following sentences: Chemical equation are balanced to satisfy the law of ________ The number and type of all _______must be the same on both sides of the reaction arrow. (iv) Write the following statement in the form of a balanced chemical equation : One atom of sodium combines with one molecule of oxygen to give one molecule of sodium oxide. (v) Construct chemical equation from the following: 2 (vi) Balance the following chemical equation: ____ N2 + ____ H2 → ____ NH3 ____ KClO3 → ____ KCl + ____ O2 ____ Pb(OH)2 + ____ HCl → ____ H2O + ____ PbCl2 ____ AlBr3 + ____ K2SO4 → ____ KBr + ____ Al2(SO4)3 ____ CH4 + ____ O2 → ____ CO2 + ____ H2O ____ Na ...
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